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首页> 外文期刊>Fibres & textiles in Eastern Europe >Numerical Study of the Effect of a Natural Convective Boundary Layer around the Human Body on the Transfer of Heat through a Textile Structure
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Numerical Study of the Effect of a Natural Convective Boundary Layer around the Human Body on the Transfer of Heat through a Textile Structure

机译：人体自然对流边界层对织物结构传热影响的数值研究

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摘要

Heat losses from the human body occur through a barrier of one or more textile layers with particular permeability, thermal insulation, water absorption abilities, etc. The convective boundary layer (CBL) around the clothed body is disturbed during body movement, and the air layer between the body and the textile layer(s) is broken up, thus changing the heat transfer through the textile layer and its insulation abilities. The purpose of the present study was to evaluate the effect of the convective boundary layer around the human body on the heat transfer through a textile layer by numerical simulation, using Computational Fluid Dynamics and a commercial CFD software package, by means of the Finite Volume Method. A new approach for modeling a textile surface was applied based on the theory of jet systems. The results of the study indicated that heat transfer trough the textile barrier is strongly influenced by the speed of the convective layer around the human body and the textile layer placed in between the body and the environment.
机译：人体的热量散失是通过一层或多层具有特殊渗透性，隔热性，吸水能力等的纺织层的屏障发生的。在人体运动过程中，衣服周围的对流边界层（CBL）受到干扰，空气层受到干扰主体和织物层之间的热分解被破坏，从而改变了通过织物层的热传递及其隔热能力。本研究的目的是通过有限体积法，使用计算流体动力学和商业CFD软件包，通过数值模拟，评估人体周围对流边界层对通过纺织品层的传热的影响。 。基于射流系统的理论，采用了一种新的纺织品表面建模方法。研究结果表明，通过织物屏障的热传递受到人体周围对流层和置于人体与环境之间的织物层的速度的强烈影响。

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